Central Arizona DX Association


July Meeting

President's Message

June Meeting Recap

Radio conditions for DXing continue to be challenging during the bottom of the sunspot cycle.  This time of year the only bands showing any promise for working DX are from 17 meters to 40 meters and many days even those bands are limited to domestic propagation only.  We are in the Sporadic E season, however, and that means 6 meters may provide some surprises with multiple-hop signals reaching beyond our borders.  It is a good time to keep the N3TUQ “6 Meter DX Map” open on a computer screen to watch for openings.  https://n3tuq.com/dxmap.php

Most of the 6m DX action now centers around WSJT digital modes.  A few lucky club members have made contacts with European and Asian stations in recent weeks on JT65A.  I have managed a couple with Japan myself, but the rare European openings continue to elude me.  It takes a lot of dedicated screen watching and some luck to catch these rare Magic Band openings when the clouds line up for Arizona hams.

Field Day is rapidly approaching.  It is an event I have enjoyed throughout my ham radio career.  While CADXA does not have its own FD activity, there are plenty of general interest radio clubs looking for operators.  I am hoping to get up north for a "cool weekend" and enjoy FD in the pine trees.


Lee, KY7M

Welcome to the Central Arizona DX Association

Announced DX Operations
by NG3K

CADXA Repeater and Net
Join us on the K5VT repeater to announce and discuss DX.  In addition, there is a Thursday night net at 7:00 pm except on CADXA meeting nights.  The repeater and net are open to all DX enthusiasts.   
147.32 MHz (+) no PL tone

Courtesy of The Daily DX™

Current Solar Data



We are the largest ham radio DX club in Arizona with over 120 members, many of whom are on the ARRL's DXCC Honor Roll.  We have several members who have traveled to distant places to put "rare" countries on the air.  We encourage any ham interested in DXing to join our club and learn about the many aspects of talking to hams around the globe who share this amazing hobby with us.  Founded in 1974, we are an ARRL-affiliated club and a member club of the Amateur Radio Council of Arizona (ARCA).

Our next meeting will be on Thursday night, July 13th, at the PERA Club beginning at 7:00 pm.  The program will be “Ground is a Myth” presented by Kristen McIntyre, K6WX, ARRL Technical Coordinator for the East Bay Section and president of the Palo Alto Amateur Radio Association.   Kristen explains: “Ground is something you stand on, but in an electrical sense, the meaning is much less clear. When it comes to hams and ground, things get really confused. We drive rods into the earth, but why?”  Kristen will look at whether any of this makes sense, and what theory tells us about "ground", and if it exists in any sensible way at all.  She will talk about DC grounds, RF grounds, and even about gravity.

Please feel free to arrive early to socialize with your friends.  Refreshments will be served at the break.  Guests are always welcome.

We had an amazing meeting in June with the former Chief Design Engineer from HAARP, the High Frequency Active Auroral Research Program.  Steve Floyd, W4YHD, has attended our club meetings from time to time when he has been in town for business trips.  While he could not be in town for the June CADXA meeting, we arranged to have him present this unique program long distance using a program called Team Viewer that allowed him to show us his PowerPoint slides from his home computer in Virginia. 

After solving some technical issues getting an internet connection working at the PERA Club, Steve wowed us with his descriptions of this 180 transmitter/tower/antenna array research facility in Gakona, Alaska.  Originally commissioned by the U.S. Navy, Air Force and DARPA, the HAARP Research Station uses this phased array to produce as much as 3,600 KW of power at frequencies in the range of 2.8 – 10 MHz.  The station can literally create its own propagation and continues to be used by scientists for a wide variety of RF-related experiments under the auspices of the University of Alaska.

From DX Heat